Safety apparatus for miners&#39; trucks.



V. STASOH. SAFETY APPARATUS FOR MINBRS' TRUCKS; APiLIOATION FILED AUG.24, 1911.

l,019,28l. Patented Mar.5,1912.

UNITED STATES PATENT OFFICE.

VALENTIN STASCH, 0F FRIEDENSH'U'TTE,

GERMANY, nssleivon or ONE-HALF TO THE FIRM 0F GRAFL ICH SCHAFFGOTSCHSCHEWEB/ICE, G. M. B. H., OF BEUTHEN, GER-.

' MANY.

Specification of Letters Patent.

I SAFETY A IE'IARATUS FOR MINERS TRUCKS.

Application filed August 24, 1911. Serial No. 645,889.

17 '0 all whom it may concern Be it known that I, VALENTIN STAsorr, asubject of the German Emperor, and resi-' dent of F riedenshiitte,Germany, have in vented certain new and useful Improvements in SafetyApparatus for Miners Trucks, of which the following is a specification.

This invention relates to an improvedsafety-apparatus for miners trucks,particularly for those used on inclined planes in --mines. Normally, aidsafety-apparatus allows an uno structed running of the trucks in upwardand downward direction. As soon as, however, i the rope of a truckbreaks and the latter runs therefore down with great velocity, a tappet,which by a connecting-rod is pivotally connected with a double-armedweighted-abutment-lever, is, by the quick rotation of the latter causedby the quick downward movement of the truck, also quickly turned,whereby a catch-lever, which is movably located on the axle of saidtappet, is'thrown into catching position, in which, it catches the frontaxle of the truck or another abutment The one-armed catch-lever and theangle-lever operating the latter by a connecting-rod can be-separatedfrom each other for any suit-able local distance, so that a catching ofropeless trucks is insured at any{ inclination of the plane on which thetrue runs. The whole arrangement can be constructed as a rail brake andadapted to be shifted in longitudinal direction. Also, other appropriatebraking means may be mployed inorder to prevent a sudden stopping of thetruck. As the front axle of the car is caught; it might happen that thetruck would turn over; To prevent this, a beam or the like may bearranged on the roof for this purpose.

In the accompanying drawing, Figure l is a si" view of thesafetyepparatus in its position ready for,use,-Figs. 2 t0 4 show, in

similar views of the'apparatus, the swinging of the anglerlever on adownward run of the truck, the swinging of the angle-lever on an upwardrun of the truck, and the catching, of the truck respectively, whileFig. 5 is a plan view of Fig. 4.

Between the rails a for the wheels I) of the truck, the.safety-apparatus is arranged on angle-iron bars of fixed on the sleepers0.

turned, the catch-lever z is On the axle e the double-armed angle-leverf is movably mounted and fitted with a counter-weight g. Thec'atch-lever z' is movably mounted on the axle 7.: of the tappet h,which carries a projection positioned beneath the catclrlever i. Thetappet l1. and the doublearmed lever f are pivot-ally connected by arod- Z. The two angle-iron 'bars cl have a transverse member m on whichin catching position the catch-lever 2' is adapted to rest (Fig. 4),.lever z rests on a bar 1: or any other abutment.

.In normal working, when the truck moves downward (Fig. 2), the lever fis turned when passed by the wheel axles. The swinging-back of the leverinto its position of rest is effected automatically by action of thecatch-lever i which serves then as a counterweight. On the other hand,when thetruck moves upward (F ig. 3), again a turning of the lever f iseffected by the wheel axles, its swinging-back being then effected bythe counterweight g. As soon as, however, atruck becomes ropeless, thelever f (Fig. 2) is caused to swing violently, so that through thetappet h, '-which is thus also quickly thrown into its catching position(Fig. 4.), in which it rests against the abutment m, and the front wheelaxle is caught by the same.

Obviously, instead of the wheel axle, an-

other abutment on the truck may be used In normal position,the catch--Patentedhlar. 5,1912.

for being caught by the catch-lever. this being clear ,I claim:

A safety-apparatus for miners trucks to without further illustration.

be run on inclined planes, adaptedto be arranged between the rails onwhich the trucks are run,- comprising in combination, a double-armedswing-lever adapted to project with its at a distance from saidswing-lever, a fixed tappet on said axle having a projection, a'

on said axle and designed to serve as counterweight for said lever uponthe latter being moved in the normal working of the upper arm into theway of the. wheel axlesof the truck, an axle arranged" trucks on thedownward run of same but In testimony whereof I have hereunto set to bethrown by the projection of said tappet my hamL in the presence of twosubscribing into its catching position for arresting said witnesses.truck when the latter becomes ropelcss, and

an abutment for securing said catch-lever in Vitnesses: its catchingposition, substantially as and for ERNST KATZ, the purpose setforth.Einzs'r lhimscn.

VALENJTN STASGH.

